REGULATED INFORMATION

Information on the Total Number of Voting Rights and Shares

Mont–Saint–Guibert (Belgium), August 30, 2023, 10:30 pm CET / 4:30 pm ET "" In accordance with article 15 of the Law of 2 May 2007 on the disclosure of large shareholdings, Nyxoah SA (Euronext Brussels and Nasdaq: NYXH) publishes the below information following the issue of new shares.

• Share capital: EUR 4,925,869.05
• Total number of securities carrying voting rights: 28,673,985 (all ordinary shares)
• Total number of voting rights (= denominator): 28,673,985 (all relating to ordinary shares)
• Number of rights to subscribe to securities carrying voting rights not yet issued:

• 100 "2018 ESOP Warrants" issued on December 12, 2018, entitling their holders to subscribe to a total number of 50,000 securities carrying voting rights (all ordinary shares);
• 410,500 "2020 ESOP Warrants" issued on February 21, 2020, entitling their holders to subscribe to a total number of 410,500 securities carrying voting rights (all ordinary shares); and
• 1,265,500 "2021 ESOP Warrants" issued on September 8, 2021, entitling their holders to subscribe to a total number of 1,265,500 securities carrying voting rights (all ordinary shares); and
• 700,000 "2022 ESOP Warrants" issued on December 28, 2022, entitling their holders to subscribe to a total number of 700,000 securities carrying voting rights (all ordinary shares).

*

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Contacts:
Nyxoah
David DeMartino, Chief Strategy Officer
david.demartino@nyxoah.com
+1 310 310 1313

Attachment

• 2023 08 30 – Press release – Number of shares (ENG)

GLOBENEWSWIRE (Distribution ID 1000837155)

REGULATED INFORMATION

Information on the Total Number of Voting Rights and Shares

Mont–Saint–Guibert (Belgium), July 27, 2023, 10:30 pm CET / 4:30 pm ET "" In accordance with article 15 of the Law of 2 May 2007 on the disclosure of large shareholdings, Nyxoah SA (Euronext Brussels and Nasdaq: NYXH) publishes the below information following the issue of new shares.

• Share capital: EUR 4,924,151.05
• Total number of securities carrying voting rights: 28,663,985 (all ordinary shares)
• Total number of voting rights (= denominator): 28,663,985 (all relating to ordinary shares)
• Number of rights to subscribe to securities carrying voting rights not yet issued:

• 20 "2016 ESOP Warrants" issued on November 3, 2016, entitling their holders to subscribe to a total number of 10,000 securities carrying voting rights (all ordinary shares);
• 100 "2018 ESOP Warrants" issued on December 12, 2018, entitling their holders to subscribe to a total number of 50,000 securities carrying voting rights (all ordinary shares);
• 410,500 "2020 ESOP Warrants" issued on February 21, 2020, entitling their holders to subscribe to a total number of 410,500 securities carrying voting rights (all ordinary shares); and
• 1,267,000 "2021 ESOP Warrants" issued on September 8, 2021, entitling their holders to subscribe to a total number of 1,267,000 securities carrying voting rights (all ordinary shares); and
• 700,000 "2022 ESOP Warrants" issued on December 28, 2022, entitling their holders to subscribe to a total number of 700,000 securities carrying voting rights (all ordinary shares).

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Contacts:
Nyxoah
David DeMartino, Chief Strategy Officer
david.demartino@nyxoah.com
+1 310 310 1313

Attachment

• 2023 07 27 – Press release – Number of shares (ENG)

GLOBENEWSWIRE (Distribution ID 1000831957)

REGULATED INFORMATION

Information on the total number of voting rights and shares

Mont–Saint–Guibert (Belgium), June 30, 2022, 10:30 pm CET / 4:30 pm ET "" In accordance with article 15 of the Law of 2 May 2007 on the disclosure of large shareholdings, Nyxoah SA (Euronext Brussels and Nasdaq: NYXH) publishes the belowinformation following the issue of new shares.

• Share capital: EUR 4,438,351.16
• Total number of securities carrying voting rights: 25,836,279 (all ordinary shares)
• Total number of voting rights (= denominator): 25,836,279 (all relating to ordinary shares)
• Number of rights to subscribe to securities carrying voting rights not yet issued:

• • 55 "2016 ESOP Warrants" issued on November 3, 2016, entitling their holders to subscribe to a total number of 27,500 securities carrying voting rights (all ordinary shares);
  • 100 "2018 ESOP Warrants" issued on December 12, 2018, entitling their holders to subscribe to a total number of 50,000 securities carrying voting rights (all ordinary shares);
  • 490,500 "2020 ESOP Warrants" issued on February 21, 2020, entitling their holders to subscribe to a total number of 490,500 securities carrying voting rights (all ordinary shares); and
  • 1,385,125 "2021 ESOP Warrants" issued on September 8, 2021, entitling their holders to subscribe to a total number of 1,385,125 securities carrying voting rights (all ordinary shares).

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For further information, please contact:

Nyxoah
Jeremy Feffer, VP IR and Corporate Communications
jeremy.feffer@nyxoah.com
+1 917 749 1494

Attachment

• 2022 06 30 – Press release – Number of shares (ENG)

GLOBENEWSWIRE (Distribution ID 1000672122)

REGULATED INFORMATION

Information on the total number of voting rights and shares

Mont–Saint–Guibert (Belgium), November 26, 2021, 10:30 pm CET / 4:30 pm ET "" In accordance with article 15 of the Law of 2 May 2007 on the disclosure of large shareholdings, Nyxoah SA (Euronext Brussels and Nasdaq: NYXH) publishes the belowinformation following the exercise of subscription rights and the issue of new shares.

• Share capital: EUR 4,427,369.69
• Total number of securities carrying voting rights: 25,772,359 (all ordinary shares)
• Total number of voting rights (= denominator): 25,772,359 (all relating to ordinary shares)
• Number of rights to subscribe to securities carrying voting rights not yet issued:

• • 105 "2016 ESOP Warrants" issued on November 3, 2016, entitling their holders to subscribe to a total number of 52,500 securities carrying voting rights (all ordinary shares);
  • 100 "2018 ESOP Warrants" issued on December 12, 2018, entitling their holders to subscribe to a total number of 50,000 securities carrying voting rights (all ordinary shares);
  • 490,500 "2020 ESOP Warrants" issued on February 21, 2020, entitling their holders to subscribe to a total number of 490,500 securities carrying voting rights (all ordinary shares); and
  • 1,400,000 "2021 ESOP Warrants" issued on September 8, 2021, entitling their holders to subscribe to a total number of 1,400,000 securities carrying voting rights (all ordinary shares).

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For further information, please contact:

Nyxoah
Jeremy Feffer, VP IR and Corporate Communications
jeremy.feffer@nyxoah.com
+1 917 749 1494

Gilmartin Group
Vivian Cervantes
IR@nyxoah.com

Attachment

• 2021 11 26 – Press release – Number of shares (ENG) (final)

GLOBENEWSWIRE (Distribution ID 1000580599)

REGULATED INFORMATION

Information on the total number of voting rights and shares

Mont–Saint–Guibert (Belgium), October 29, 2021, 10:30 pm CET / 4:30 pm ET "" In accordance with article 15 of the Law of 2 May 2007 on the disclosure of large shareholdings, Nyxoah SA (Euronext Brussels and Nasdaq: NYXH) publishes the below information following the exercise of subscription rights and the issue of new shares.

• Share capital: EUR 4,407,612.69
• Total number of securities carrying voting rights: 25,657,359 (all ordinary shares)
• Total number of voting rights (= denominator): 25,657,359 (all relating to ordinary shares)
• Number of rights to subscribe to securities carrying voting rights not yet issued:

• • 90 "2013 ESOP Warrants" issued on May 3, 2013 and 23 December 2014, entitling their holders to subscribe to a total number of 45,000 securities carrying voting rights (all ordinary shares);
  • 205 "2016 ESOP Warrants" issued on November 3, 2016, entitling their holders to subscribe to a total number of 102,500 securities carrying voting rights (all ordinary shares);
  • 100 "2018 ESOP Warrants" issued on December 12, 2018, entitling their holders to subscribe to a total number of 50,000 securities carrying voting rights (all ordinary shares);
  • 510,500 "2020 ESOP Warrants" issued on February 21, 2020, entitling their holders to subscribe to a total number of 510,500 securities carrying voting rights (all ordinary shares); and
  • 1,400,000 "2021 ESOP Warrants" issued on September 8, 2021, entitling their holders to subscribe to a total number of 1,400,000 securities carrying voting rights (all ordinary shares).

*

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For further information, please contact:

Nyxoah
Jeremy Feffer, VP IR and Corporate Communications
jeremy.feffer@nyxoah.com
+1 917 749 1494

Gilmartin Group
Vivian Cervantes
IR@nyxoah.com

Attachment

• 2021 10 29 – Press release – Number of shares (ENG) (final)

GLOBENEWSWIRE (Distribution ID 1000565160)

REGULATED INFORMATION

Information on the total number of voting rights and shares

Mont–Saint–Guibert (Belgium), October 1, 2021, 10:30 pm CET / 4:30 pm ET "" In accordance with article 15 of the Law of 2 May 2007 on the disclosure of large shareholdings, Nyxoah SA (Euronext Brussels and Nasdaq: NYXH) publishes the belowinformation following the issue of 27,000 new shares on September 30, 2021 pursuant to the exercise of subscription rights.

• Share capital: EUR 4,388,714.69
• Total number of securities carrying voting rights: 25,547,359 (all ordinary shares)
• Total number of voting rights (= denominator): 25,547,359 (all relating to ordinary shares)
• Number of rights to subscribe to securities carrying voting rights not yet issued:

• • 91 "2013 ESOP Warrants" issued on May 3, 2013 and 23 December 2014, entitling their holders to subscribe to a total number of 45,500 securities carrying voting rights (all ordinary shares);
  • 205 "2016 ESOP Warrants" issued on November 3, 2016, entitling their holders to subscribe to a total number of 102,500 securities carrying voting rights (all ordinary shares);
  • 299 "2018 ESOP Warrants" issued on December 12, 2018, entitling their holders to subscribe to a total number of 149,500 securities carrying voting rights (all ordinary shares);
  • 520,500 "2020 ESOP Warrants" issued on February 21, 2020, entitling their holders to subscribe to a total number of 520,500 securities carrying voting rights (all ordinary shares); and
  • 1,400,000 "2021 ESOP Warrants" issued on September 8, 2021, entitling their holders to subscribe to a total number of 1,400,000 securities carrying voting rights (all ordinary shares).

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For further information, please contact:

Nyxoah
Fabian Suarez, CFO
corporate@nyxoah.com
+32 (0)10 22 24 55

Gilmartin Group
Vivian Cervantes
IR@nyxoah.com

Attachment

• 2021 10 01 – Press release – Number of shares (ENG) (final)

GLOBENEWSWIRE (Distribution ID 1000550338)

REGULATED INFORMATION

Information on the total number of voting rights and shares

Mont–Saint–Guibert (Belgium), September 12, 2021, 10:30 pm CET / 4:30 pm ET "" In accordance with article 15 of the Law of 2 May 2007 on the disclosure of large shareholdings, Nyxoah SA (Euronext Brussels and Nasdaq: NYXH) publishes the below information following the issue of 1,400,000 new warrants on September 8, 2021 and the issue of 82,500 new shares on September 10, 2021 pursuant to the exercise of subscription rights.

• Share capital: EUR 4,384,076.09
• Total number of securities carrying voting rights: 25,520,359 (all ordinary shares)
• Total number of voting rights (= denominator): 25,520,359 (all relating to ordinary shares)
• Number of rights to subscribe to securities carrying voting rights not yet issued:
  • 91 "2013 ESOP Warrants" issued on May 3, 2013 and 23 December 2014, entitling their holders to subscribe to a total number of 45,500 securities carrying voting rights (all ordinary shares);
  • 259 "2016 ESOP Warrants" issued on November 3, 2016, entitling their holders to subscribe to a total number of 129,500 securities carrying voting rights (all ordinary shares);
  • 299 "2018 ESOP Warrants" issued on December 12, 2018, entitling their holders to subscribe to a total number of 149,500 securities carrying voting rights (all ordinary shares);
  • 520,500 "2020 ESOP Warrants" issued on February 21, 2020, entitling their holders to subscribe to a total number of520,500 securities carrying voting rights (all ordinary shares); and
  • 1,400,000 "2021 ESOP Warrants" issued on September 8, 2021, entitling their holders to subscribe to a total number of 1,400,000 securities carrying voting rights (all ordinary shares).

*

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For further information, please contact:

Nyxoah
Fabian Suarez, CFO
corporate@nyxoah.com
+32 (0)10 22 24 55

Gilmartin Group
Vivian Cervantes
IR@nyxoah.com

Attachment

• 2021 09 12 – Press release – Number of shares (ENG) (final)

GLOBENEWSWIRE (Distribution ID 1000546691)

REGULATED INFORMATION

Information on the total number of voting rights and shares

Mont–Saint–Guibert (Belgium), July 9, 2021, 10:30 pm CET / 4:30 pm ET "" In accordance with article 15 of the Law of 2 May 2007 on the disclosure of large shareholdings, Nyxoah SA (Euronext Brussels and Nasdaq: NYXH) publishes the below information following the issue of 435,250 new shares on July 9, 2021 pursuant to (i) a capital increase in connection with Nyxoah's initial public offering in the United States and (ii) the exercise of subscription rights.

• Share capital: EUR 4,369,902.59
• Total number of securities carrying voting rights: 25,437,859 (all ordinary shares)
• Total number of voting rights (= denominator): 25,437,859 (all relating to ordinary shares)
• Number of rights to subscribe to securities carrying voting rights not yet issued:

• 91 "2013 ESOP Warrants" issued on 3 May 2013 and 23 December 2014, entitling their holders to subscribe to a total number of 45,500 securities carrying voting rights (all ordinary shares);
• 365 "2016 ESOP Warrants" issued on 3 November 2016, entitling their holders to subscribe to a total number of 182,500 securities carrying voting rights (all ordinary shares);
• 319 "2018 ESOP Warrants" issued on 12 December 2018, entitling their holders to subscribe to a total number of 159,500 securities carrying voting rights (all ordinary shares); and
• 540,000 "2020 ESOP Warrants" issued on 21 February 2020, entitling their holders to subscribe to a total number of 540,000 securities carrying voting rights (all ordinary shares).

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For further information, please contact:

Nyxoah
Fabian Suarez, CFO
corporate@nyxoah.com
+32 (0)10 22 24 55

Gilmartin Group
Vivian Cervantes
IR@nyxoah.com

Attachment

• 2021 07 09 – Press release – Number of shares (ENG) (final)

GLOBENEWSWIRE (Distribution ID 1000515503)

REGULATED INFORMATION

Information on the total number of voting rights and shares

Mont–Saint–Guibert (Belgium), July 7, 2021, 10:30 pm CET / 4:30 pm ET "" In accordance with article 15 of the Law of 2 May 2007 on the disclosure of large shareholdings, Nyxoah SA (Euronext Brussels and Nasdaq: NYXH) publishes the below information following the issue of 2,835,000 new shares on July 7, 2021 pursuant to a capital increase in connection with Nyxoah's initial public offering in the United States.

• Share capital: EUR 4,295,126.64
• Total number of securities carrying voting rights: 25,002,609 (all ordinary shares)
• Total number of voting rights (= denominator): 25,002,609 (all relating to ordinary shares)
• Number of rights to subscribe to securities carrying voting rights not yet issued:

• 91 "2013 ESOP Warrants" issued on 3 May 2013 and 23 December 2014, entitling their holders to subscribe to a total number of 45,500 securities carrying voting rights (all ordinary shares);
• 365 "2016 ESOP Warrants" issued on 3 November 2016, entitling their holders to subscribe to a total number of 182,500 securities carrying voting rights (all ordinary shares);
• 319 "2018 ESOP Warrants" issued on 12 December 2018, entitling their holders to subscribe to a total number of 159,500 securities carrying voting rights (all ordinary shares); and
• 550,000 "2020 ESOP Warrants" issued on 21 February 2020, entitling their holders to subscribe to a total number of 550,000 securities carrying voting rights (all ordinary shares).

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For further information, please contact:

Nyxoah
Fabian Suarez, CFO
corporate@nyxoah.com
+32 (0)10 22 24 55

Gilmartin Group
Vivian Cervantes
IR@nyxoah.com

Attachment

• 2021 07 07 – Press release – Number of shares (ENG) (final)

GLOBENEWSWIRE (Distribution ID 1000515085)